chore(deps): update dependency ts-jest to v25

[renovate]

This PR contains the following updates:

Package	Type	Update	Change
ts-jest (source)	devDependencies	major	24.3.0 -> 25.2.0

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Release Notes

kulshekhar/ts-jest

v25.2.0

Compare Source

Bug Fixes

• config: comment out unused codes (dff1332)
• config: pass plain config object to babel-jest transformer (e0895da)
• config: remove unused codes (7aa3928)
• config: remove unused import (81897e1)
• test: improve unit tests for babel config (ebd9380)
• test: update snapshot (0e1190d)

v25.1.0

Compare Source

Bug Fixes

• config: comment out unused codes (dff1332)
• config: pass plain config object to babel-jest transformer (e0895da)
• config: remove unused codes (7aa3928)
• config: remove unused import (81897e1)
• test: improve unit tests for babel config (ebd9380)
• test: update snapshot (0e1190d)

v25.0.0

Compare Source

Bug Fixes

• jest 25 type definitions (ba82a9e)

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[coveralls]

Coverage remained the same at 100.0% when pulling 88b8670 on renovate/ts-jest-25.x into 406f124 on master.